login: panic: receive 1a: so 0xfffffd806f6f27d0, so_type 3, m 0xfffffd8078199400, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 445413 79738 0 0 0 0 syz-executor.1 *402160 92020 0 0 0 1K dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821d9d32) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6f27d0,0,ffff800020abcfa8,0,0,ffff800020abceb4) at soreceive+0x174a sys/kern/uipc_socket.c:977 soo_read(fffffd80775f1130,ffff800020abcfa8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020a7cc38,6,ffff800020abcfa8,0,ffff800020abd090) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020a7cc38,ffff800020abd040,ffff800020abd090) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020abd110) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020abd110) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffee160, count: 7 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic receive 1a: so 0xfffffd806f6f27d0, so_type 3, m 0xfffffd8078199400, m_type 0 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821d9d32) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6f27d0,0,ffff800020abcfa8,0,0,ffff800020abceb4) at soreceive+0x174a sys/kern/uipc_socket.c:977 soo_read(fffffd80775f1130,ffff800020abcfa8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020a7cc38,6,ffff800020abcfa8,0,ffff800020abd090) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020a7cc38,ffff800020abd040,ffff800020abd090) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020abd110) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020abd110) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffee160, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020abccf0 rbx 0xffff800020abcda0 rdx 0xffff800020a7cc38 rcx 0 rax 0 r8 0xffffffff8175b6af kprintf+0x16f r9 0x1 r10 0x25 r11 0xf9488da2c1932aa1 r12 0x3000000008 r13 0xffff800020abcd00 r14 0x100 r15 0x1 rip 0xffffffff817764a8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020abcce0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=402160 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a7c758,0xffff800020a7d398 process=0xffff800020a912d0 user=0xffff800020ab8000, vmspace=0xfffffd807efff170 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 79738 445413 28260 0 7 0 syz-executor.1 79738 295768 28260 0 2 0x4000000 syz-executor.1 34672 169205 28973 0 2 0 syz-executor.0 34672 416727 28973 0 3 0x4000080 fsleep syz-executor.0 34672 127288 28973 0 2 0x4000000 syz-executor.0 26945 506364 0 0 3 0x14200 bored sosplice 28260 319606 72188 0 3 0x82 nanosleep syz-executor.1 28973 177980 72188 0 3 0x82 nanosleep syz-executor.0 72188 177090 33593 0 3 0x82 thrsleep syz-fuzzer 72188 466648 33593 0 3 0x4000082 nanosleep syz-fuzzer 72188 351788 33593 0 3 0x4000082 thrsleep syz-fuzzer 72188 121668 33593 0 3 0x4000082 thrsleep syz-fuzzer 72188 489653 33593 0 3 0x4000082 thrsleep syz-fuzzer 72188 332062 33593 0 3 0x4000082 thrsleep syz-fuzzer 72188 2165 33593 0 3 0x4000082 thrsleep syz-fuzzer 72188 440004 33593 0 3 0x4000082 kqread syz-fuzzer 72188 503704 33593 0 3 0x4000082 thrsleep syz-fuzzer 72188 124478 33593 0 3 0x4000082 thrsleep syz-fuzzer 33593 327945 50485 0 3 0x10008a pause ksh 50485 143488 38522 0 3 0x92 select sshd 84793 296896 1 0 3 0x100083 ttyin getty 38522 39579 1 0 3 0x80 select sshd 21719 222098 51460 74 3 0x100092 bpf pflogd 51460 128595 1 0 3 0x80 netio pflogd 29690 229158 74969 73 3 0x100090 kqread syslogd 74969 132963 1 0 3 0x100082 netio syslogd 35376 73668 1 77 3 0x100090 poll dhclient *92020 402160 1 0 7 0 dhclient 87591 483495 0 0 3 0x14200 bored smr 18191 282375 0 0 2 0x14200 zerothread 13502 371758 0 0 3 0x14200 aiodoned aiodoned 49197 402118 0 0 3 0x14200 syncer update 16394 72093 0 0 3 0x14200 cleaner cleaner 90595 260835 0 0 3 0x14200 reaper reaper 94920 474166 0 0 3 0x14200 pgdaemon pagedaemon 66488 4956 0 0 3 0x14200 bored crynlk 32008 166021 0 0 3 0x14200 bored crypto 90730 314512 0 0 3 0x40014200 acpi0 acpi0 75595 242922 0 0 3 0x40014200 idle1 26156 263404 0 0 3 0x14200 bored softnet 97245 143755 0 0 3 0x14200 bored systqmp 38464 419459 0 0 3 0x14200 bored systq 13444 182086 0 0 3 0x40014200 bored softclock 22834 89475 0 0 3 0x40014200 idle0 1 110266 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 92020 (dhclient) thread 0xffff800020a7cc38 (402160) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff826683d8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1164 #1 solock+0x66 sys/kern/uipc_socket2.c:292 #2 soreceive+0x114 sys/kern/uipc_socket.c:731 #3 soo_read+0x53 sys/kern/sys_socket.c:70 #4 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #5 sys_read+0x83 sys/kern/sys_generic.c:157 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9498 6415K 6926K 78643K 10733 0 pcb 13 8K 8K 78643K 51 0 rtable 101 3K 3K 78643K 225 0 ifaddr 60 12K 13K 78643K 72 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1471 0 iov 0 0K 4K 78643K 9 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1267 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 16 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 6 17K 25K 78643K 112 0 proc 61 63K 83K 78643K 445 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 9 0 in_multi 43 2K 2K 78643K 53 0 ether_multi 1 0K 0K 78643K 3 0 mrt 0 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 223 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 116 38K 38K 78643K 1306 0 UVM aobj 9 2K 2K 78643K 10 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 16 0 NDP 9 0K 0K 78643K 13 0 temp 93 3015K 3079K 78643K 2342 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 7 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 41 0 39 1 0 1 1 0 8 0 rtentry 112 50 0 8 2 0 2 2 0 8 0 unpcb 120 81 0 71 1 0 1 1 0 8 0 syncache 264 4 0 4 2 2 0 1 0 8 0 tcpqe 32 906 0 906 1 1 0 1 0 8 0 tcpcb 544 74 0 70 2 0 2 2 0 8 1 inpcb 280 336 0 325 3 0 3 3 0 8 2 rttmr 72 2 0 2 1 0 1 1 0 8 1 nd6 48 6 0 2 1 0 1 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 30 0 0 1 0 1 1 0 8 0 pfstkey 112 30 0 0 1 0 1 1 0 8 0 pfstate 328 30 0 0 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 211 0 38 14 0 14 14 0 8 2 art_table 32 212 0 38 2 0 2 2 0 8 0 art_node 16 49 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 18 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 8 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1532 0 125 46 0 46 46 0 8 0 ffsino 272 1532 0 125 95 0 95 95 0 8 0 nchpl 144 1895 0 277 61 0 61 61 0 8 0 uvmvnodes 72 1612 0 0 30 0 30 30 0 8 0 vnodes 208 1612 0 0 85 0 85 85 0 8 0 namei 1024 4926 0 4926 3 2 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 560 1 0 0 1 0 1 1 0 8 0 scxspl 192 5709 0 5709 8 1 7 7 0 8 7 plimitpl 152 21 0 13 1 0 1 1 0 8 0 sigapl 424 328 0 295 4 0 4 4 0 8 0 futexpl 56 1741 0 1740 1 0 1 1 0 8 0 knotepl 112 53 0 34 1 0 1 1 0 8 0 kqueuepl 144 14 0 12 1 0 1 1 0 8 0 pipelkpl 48 92 0 82 1 0 1 1 0 8 0 pipepl 120 184 0 165 1 0 1 1 0 8 0 fdescpl 496 312 0 295 3 0 3 3 0 8 0 filepl 152 1875 0 1773 7 1 6 6 0 8 2 lockfpl 104 48 0 47 1 0 1 1 0 8 0 lockfspl 48 18 0 17 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 136 0 127 1 0 1 1 0 8 0 zombiepl 144 295 0 295 2 1 1 1 0 8 1 processpl 960 328 0 295 6 1 5 5 0 8 0 procpl 624 552 0 507 5 0 5 5 0 8 1 sosppl 128 3 0 3 1 0 1 1 0 8 1 sockpl 400 460 0 439 6 1 5 5 0 8 2 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 207 0 0 25 0 25 25 0 8 0 mtagpl 80 8 0 0 1 0 1 1 0 8 0 mbufpl 256 221 0 0 14 0 14 14 0 8 0 bufpl 280 4224 0 174 290 0 290 290 0 8 0 anonpl 16 46505 0 29928 70 1 69 69 0 124 2 amapchunkpl 152 1660 0 1515 11 0 11 11 0 158 5 amappl16 192 1346 0 440 46 0 46 46 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 44 0 40 2 1 1 1 0 8 0 amappl13 168 66 0 63 1 0 1 1 0 8 0 amappl12 160 13 0 11 2 1 1 1 0 8 0 amappl11 152 72 0 53 1 0 1 1 0 8 0 amappl10 144 25 0 19 1 0 1 1 0 8 0 amappl9 136 390 0 387 1 0 1 1 0 8 0 amappl8 128 317 0 294 1 0 1 1 0 8 0 amappl7 120 118 0 107 1 0 1 1 0 8 0 amappl6 112 24 0 19 2 1 1 1 0 8 0 amappl5 104 171 0 155 1 0 1 1 0 8 0 amappl4 96 580 0 543 2 1 1 2 0 8 0 amappl3 88 154 0 145 1 0 1 1 0 8 0 amappl2 80 1549 0 1469 3 1 2 3 0 8 0 amappl1 72 17047 0 16589 26 16 10 20 0 8 0 amappl 80 796 0 747 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 9 0 1 1 0 1 1 0 8 0 uaddrrnd 24 313 0 295 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 313 0 295 1 0 1 1 0 8 0 vmmpekpl 168 6550 0 6517 2 0 2 2 0 8 0 vmmpepl 168 45552 0 43383 126 9 117 117 0 357 22 vmsppl 368 312 0 295 2 0 2 2 0 8 0 pdppl 4096 633 0 591 7 1 6 6 0 8 0 pvpl 32 154126 0 134342 169 1 168 168 0 265 8 pmappl 232 312 0 295 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 185 0 7 6 0 6 6 0 8 0